Explosion-engine.



P. A. DARRACQ.

EXPLOSION ENGINE.

APPLICATION FILED 0012s, 1909.

961,938. Patented June 21,1910.

3 BHBETSBEEET 1.

P. A. DARRACQ.

EXPLOSION ENGINE.

APPLICATION FILED 0018,1909.

Patented June 21, 191 0.

3 BHEETSSHEBT 2.

0., PHOTO-LITHOGRAPKER5. WASHIPIIGTQ P. A. DARRAGQ.

EXPLOSION ENGINE.

APPLIOATION FILED 00w. 8, 1909.

Patented June 21, 1910.

3 SHEETS-SHEET 3.

PIERRE ALEXANDRE DARRACQ, OF SURESNES, FRANCE, ASSIGNOR TO SOCIE'IE A.DARRACQ &, CIE. (1905) LIMITED, 0F SURESNES, FRANCE.

EXPLOSION-ENGINE.

Specification of Letters Patent.

Patented June 21, 1910.

To all'whom it may concern:

Be it known that I, PIERRE ALEXANDRE DARRAOQ, a citizen of the FrenchRepublic, and residing at Suresnes, France, have invented certain newand useful Improvements in Explosion-Engines, of which the following isa specification.

This invention relates to an explosion engine provided with an improvedarrangement of the valve gear parts, of the oil and water pumps as wellas of the magneto for ignition, the said parts being controlled by onlytwo toothed wheels, the whole arrangement producing a light, very strongengine, which can be applied for general purposes and more particularlyfor aviation.

A construction according to this invention is illustrated in theaccompanying drawing applied by way of example to an engine with twoopposite cylinders.

In the said drawing Figure 1 is an elevation of the said engine with apartial section through one of its cylinders, Fig. 2 is a plan, Fig. 3 across-section on line AA of Fig. 1, and Fig. 4 is an end elevation.

The engine is provided with two opposite cylinders 1 and with pistons 2connected at 180 to the same crank shaft 3. To the latter is keyed apinion 4L engaging with a pinion 5 having twice the diameter of 1. Theinclined spindle 6 drives at one end the spindle 7 of the armature ofthe ignition magneto 8, and at the other end drives one of the spindles9 of the pump 10 for circulating water in the engine, the ends of thespindle 6 being connected by claws or mortises to the spindles whichthey drive for the purpose of facilitating the dismantling andinspection of the magneto and pump.

The hub of the pinion 4 is provided with a cam 11 acting on a rod 12guided in a sleeve 13 adjoining the crank case 14 of the engine, thesaid rod being kept in contact with the cam 11 by a spring 15. The rod12 is provided at its end opposite to the cam 11 with a piston 16traveling in a cylinder 17 forming a continuation of the sleeve 13. Thecylinder 17 passes right through a tank 18 containing a reserve of oil.The cylinder 17 is closed at its base by a plug provided with a valve 19for the oil which at each compression effected by the cam 11 is conveyedthrough the conduit 20, branches 21 and suitable pipes, to the differentparts to be lubricated.

The tank 18 is connected at the top to the crank casing 14 of the engineby means of an overflow branch 19 which at the same time insures aconstant level in the said crank case 14:. This combination of the oilpump with the lubricating tank 18 and the crank casing with a constantlevel of oil makes it possible to insure a continuous circulation forlubrication of the parts of the engine. On the spindle 6 carrying thepinion 5, are also mounted two cams 22, 23 acting respectively andsuccessively on the drivers or push rods 24 25 operating the inletvalves 27 and exhaust valves 28 by means of rods 29 30 and trip levers31 32 arranged on the cylinders 1.

As will be seen from this general arrangement, all the parts forcontrolling the valve gear, the magneto, and the water pump are arrangedon a spindle placed at an angle with the axis of the oil pump. Thisarrangement enables the number of parts to be reduced to a minimum, manyintermediate parts being done away with, so that a strong, powerfulengine of great lightness is obtained.

What I claim as my invention and desire to secure by Letters Patentis 1. In an explosion engine the combination with a cylinder, a pistontherein, a crank shaft and a member connecting the piston to the crankshaft, of valve mechanism, ignition mechanism and water circulatingmechanism, a spindle, means arranged on said spindle to operate the saidthree mechanisms, an oil pump arranged with its axis at an angle withthe said spindle, and a pinion and cam on the crank shaft adapted todrive respectively the spindle and the oil pump.

2. In an explosion engine the combination with a cylinder, a pistontherein, a crank shaft and a member connecting the piston to the crankshaft, of valve mechanism, ignition mechanism and water circulatingmechanism, a spindle, means arranged on said spindle to operate the saidthree mechanisms, an oil pump arranged with its axis at an angle withthe said spindle, and means on the crank shaft adapted to driverespectively the spindle and the oil pump.

3. In an explosion engine the combination with a cylinder, a pistontherein, a crank shaft, a casing for the crank shaft and a I hold theoil pump, and a pipe connection bemember connecting the piston to thecrank shaft, of a Valve mechanism, ignition mechanism, and Watercirculating mechanism, a spindle, means arranged on said spindle tooperate the said three mechanisms, an oil pump arranged with its axis atan angle With the said spindle, means on the crank shaft adapted todrive respectively the spindle and the oil pump, an oil tank adapted totween the crank casing and the oil tank for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of 15 two subscribing Witnesses.

PIERRE ALEXANDRE DARRACQ. Witnesses:

HENRI ELLINN, GEORGES BONNEUIL.

